System and method for improved SAP communications

ABSTRACT

Improved SAP communications are provided by a terminator node that acts as termination on one end of the communication channel and links to the SAP server on the other end. A server device is also provided that optionally implements this terminator node and monitors communications between the SAP server and a client. The server device optionally condenses SAP application screens. The server device also simulates certain required responses to the SAP server to allow for a persistent session between a client and the SAP server when the actual connection may be intermittent. The server device also records required records for a transaction and provides them to a client for offline processing and then synchronizes stored offline transaction data from the client with the SAP server. The system may include a client device that optionally implements the terminator node to communicate with the server device or the SAP server.

RELATED APPLICATION

This application is a continuation of U.S. patent application Ser. No.12/623,156, filed Nov. 20, 2009 and entitled “System and Method forImproved SAP Communications,” and scheduled to issue as U.S. Pat. No.8,140,617 on Mar. 20, 2012, which in turn claims priority to U.S.Provisional Patent Application No. 61/116,573, filed 20 Nov. 2008, whichis incorporated herein in its entirety by reference.

BACKGROUND

1. Field of the Invention

The present invention is generally related to client-servercommunications and is more specifically related to simplifying userinteraction with a SAP server and extending SAP functionality to mobileand intermittently connected devices.

2. Related Art

Conventional SAP software products focus on enterprise resource planning(“ERP”). These products are delivered by way of an SAP environment whichemploys a SAP R3 server as the primary server to deliver these softwareproducts. SAP provides five major enterprise applications including ERP,customer relationship management (“CRM”), product lifecycle management(“PLM”), supply chain management (“SCM”), and supplier relationshipmanagement (“SRM”).

As illustrated in FIG. 1, a conventional SAP system 10 includes a SAP R3server 20 that has a data storage area 25. The R3 server 20 is connectedto a plurality (only one is shown) of SAP GUI clients 60 that allowusers to interact with the various applications provided by theapplication server module 30 and data managed by the data base module 40on the SAP R3 server 20. The R3 nomenclature is generally understood toreflect the 3 tier architecture of a SAP system that includes thedatabase 40, the application server 30, and the client 60 (SAP GUIclient). In the SAP system, the SAP GUI client 60 is connected to the R3server 20 via a wired or wireless network 50 that allows the R3 serverand client to maintain a persistent connection across the network 50.

Often, customers that use the SAP R3 system 10 desire to make changes tocertain user interfaces. Making such changes is cumbersome at least andcan often require expensive custom programming in the Java language orthe Advanced Business Application Programming (“ABAP”) language.

Additionally, users of the SAP R3 server 20 are unable to interact withthe various applications and/or data to accomplish their work unlessthey are sitting in front of a computer running the Microsoft® Windows®operating system and also running the SAP GUI client 60. One significantdrawback of the SAP R3 system 10 is that the SAP GUI client 60 only runson the Windows operating system, which therefore precludes use of theSAP system 10 for a very significant number of potential user inputdevices.

Some attempts at providing the ability for a mobile device tocommunicate with the SAP system 10 have been undertaken. These solutionshave problems such as being limited to only those devices that supportweb based applications. Web based applications also face challenges dueto the cumbersome and difficult to use interface. Other attempts at amobile solution include custom applications that communicate with theSAP server 20 using the limited SAP business application programminginterface (“BAPI”) that are implemented using remote function calls(“RFCs”).

Furthermore, these limitations of the SAP R3 system 10 require thatemployees in the field conduct business transactions manually. Forexample, a sales person brings paperwork containing informationregarding the potential customer, price lists, discount schedules, etc.to a sales call. The sales person must manually create a quote todeliver to the potential customer during the sales call or make verbalcommitments to the customer. After providing the potential customer witha manually created quote or a verbal commitment, the sales personcontinues with sales calls throughout the day. When the sales personreturns to the office, the manually created quote and/or verbalcommitment information is entered into the SAP R3 server 20 ERP system,which then can generate the official quotes that can be delivered to thecustomer. A similar process must be followed for orders from thecustomer, e.g., received orders must be subsequently entered into theSAP R3 server 20 to make them official.

Therefore, what is needed is a system and method that provides improvedcommunications with a SAP system to overcome the significant limitationsand problems found in the conventional SAP systems described above.

SUMMARY

Accordingly, described herein are systems and methods for improved SAPcommunications that allow user devices to serve as the (client device)and communicate with a SAP server via a wired or wireless network andusing a persistent or intermittent connection. A GUIXT server runs onthe SAP R3 server or on its own server hardware and interfaces with aGUIXT client on the client device that provides the user with animproved user interface for SAP applications. The GUIXT server andclient combination allows for improved communications in a SAPenvironment where the GUIXT client may run on a mobile device and be incommunication with the SAP R3 server via a wireless communicationnetwork. The client may also run on a remote device and processtransactions offline while only periodically connecting to the SAP R3server.

In one embodiment, the GUIXT server provides an intermediary applicationthat talks to the SAP R3 server over the wired network (or via the SAPR3 server itself) and mimics the SAP R3 functionality to client devicesrunning the GUIXT client application. The GUIXT server also enables thedeployment of simplified user interfaces for the various SAPapplications in a centralized fashion and extends the SAP functionalityto mobile and periodically connected (offline) devices.

To enable communications between a mobile device and the SAP R3 server,the GUIXT server operates as the termination node and responds tonetwork communications from the SAP server (e.g., remote function calltraffic) and completes these specific types of transactions so that theSAP server will continue to maintain the connection with the client andwill continue to send traffic data. The responses to these networkcommunications from the SAP server advantageously complete thetransaction without actually performing any of the necessary operationsrequested by the SAP Server. Accordingly, the SAP functionality can beextended to a wide variety of additional user input devices such as 10key devices, barcode readers, laser scan guns, personal digitalassistants (“PDAs”), data collection terminals and any other type ofmobile device from which it is desirable to input data to or receivedata from the SAP R3 server.

Additionally, the system allows for use of applications that run on theclient device and are designed to capture and save business transactiondata (e.g., in the field) while the client device is communicativelydisconnected from the backend SAP R3 server system (i.e., in an offlinestate). These client device applications can then synchronize the savedoffline business transaction data with the SAP R3 server system whenthey are later communicatively connected to the SAP server.

Other features and advantages of the present invention will become morereadily apparent to those of ordinary skill in the art after reviewingthe following detailed description and accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The details of the present invention, both as to its structure andoperation, may be gleaned in part by study of the accompanying drawings,in which like reference numerals refer to like parts, and in which:

FIG. 1 is a network diagram illustrating a conventional SAP system;

FIG. 2 is a network diagram illustrating an example system for improvedcommunications in a SAP environment according to an embodiment of thepresent invention;

FIG. 3 is a block diagram illustrating an example GUIXT server accordingto an embodiment of the present invention;

FIG. 4 is a block diagram illustrating an example GUIXT client accordingto an embodiment of the present invention;

FIG. 5 is a flow diagram illustrating an example method for mobilecommunications in a SAP environment according to an embodiment of thepresent invention;

FIG. 6 is a flow diagram illustrating an example method for offline datacollection and synchronization in a SAP environment according to anembodiment of the present invention;

FIG. 7 is a flow diagram illustrating an example method for maintaininga persistent connection with a SAP server in a SAP environment accordingto an embodiment of the present invention;

FIG. 8 is a flow diagram illustrating an example method for improved SAPcommunications according to an embodiment of the present invention;

FIG. 9 is a block diagram illustrating an example wireless communicationdevice that may be used in connection with various embodiments describedherein; and

FIG. 10 is a block diagram illustrating an example computer system thatmay be used in connection with various embodiments described herein.

DETAILED DESCRIPTION

Certain embodiments as disclosed herein provide systems and methods forimproved SAP communications. After reading this description it willbecome apparent to one skilled in the art how to implement the inventionin various alternative embodiments and alternative applications.However, although various embodiments of the present invention will bedescribed herein, it is understood that these embodiments are presentedby way of example only, and not limitation. As such, this detaileddescription of various alternative embodiments should not be construedto limit the scope or breadth of the present invention as set forth inthe appended claims.

FIG. 2 is a network diagram illustrating an example system 100 forimproved communications in a SAP environment according to an embodimentof the present invention. In the illustrated embodiment, the system 100includes a conventional SAP R3 server 20 having an application servermodule 30, a database module 40 and also a GUIXT server module 110A thatis resident on the server. The server 20 also includes a data storagearea 25.

The illustrated system 100 also includes a GUIXT server device 110B thatis communicatively coupled with the SAP R3 server via a wired orwireless network 50. One or more GUIXT clients 120, SAP GUI +GUIXTclients 140 and SAP GUI clients 60 may also be communicatively coupledwith the SAP R3 server via a wired or wireless network 50. The network50 may also be communicatively coupled with one or more additionalnetworks that may be wired or wireless networks such as network 150.Additional GUIXT clients 130, SAP GUI +GUIXT clients 140 and SAP GUIclients 60 may be communicatively coupled with the SAP R3 server via acombination of networks including networks 150 and 50.

In alternative embodiments, the system 100 can be operated with one orboth of the GUIXT server module 110A and the GUIXT server device 110.Advantageously, multiple GUIXT servers 110(A or B) can be employed atthe same time to provide load balancing amongst the GUIXT servers 110(Aor B). In such an embodiment, one of the multiple GUIXT servers isidentified as a message server to which clients (e.g., SAP GUI client60, SAP CONSOLE (not shown), and GUIXT clients 120, 130 and 140) willconnect and the multiple GUIXT servers (110A and 110B) communicateamongst themselves to select the GUIXT server with the least load toprocess the next connection.

The GUIXT server module 110A or device 110B provides a communicationchannel between one or more GUIXT client devices and the applicationserver 30 on the SAP R3 server 20. This communication channel canadvantageously be configured on the GUIXT server module 110A or device110B, for example, by establishing a target server variable thatidentifies a particular application server 30 to which the GUIXT server110A or 110B will connect. Because there may be multiple redundant SAPR3 servers 20 to provide load balancing, the target server variable onthe GUIXT server 110A or 110B may identify a SAP R3 messaging server(not shown) that is responsible for load balancing across the multipleSAP R3 servers. Also, the GUIXT server 110A or 110B can select the SAPR3 server with the least load to connect and communicate with. The GUIXTserver 110A or 110B may communicate with the SAP R3 server using avariety of methods including remote function calls, intermediatedocuments (“IDOCS”) and many other standard ways to communication withthe SAP R3 server.

For example, the target server variable can be set to the name of theSAP R3 server 20 (e.g., Juneau); the name of the SAP R3 server 20 incombination with a logical port number (e.g., Juneau:3200 orJuneau.sap.com:3600); or the host-port combination using SAP notation(e.g., /H/Juneau/S/sapdp00). When setting the target server variable toa messaging server for load balancing, the target server variable canalso the SAP notation (e.g.,/M/Juneau.sap.com/S/sapmsPRD/G/SAP_Prod_Sys). In a messaging serverembodiment, the /M/ notation identifies the messaging server, the/S/identifies the service (logical port) to connect to, and the /G/notation identifies the logon group to connect to. Advantageously, the/M/ and /G/ notations will employ a default value if not included in thevalue to which the target server variable is set.

In one embodiment, the GUIXT server 110A or 110B can also be configuredas a SAP router in order to communicate directly with the SAP GUI client60. For example, an initialization file can be edited to instruct theGUIXT server 110A or 110B to act as a SAP router by setting aTargetServer variable to “saprouter” and also setting a TargetServerPortvariable to “saprouter.” In such an embodiment, the SAP GUI client 60identifies the internet protocol address of the GUIXT server 110A or110B in its SAP router variable (e.g., 192.161.15.7)

In the illustrated embodiment, there are three GUIXT client devices(120, 130 and 140) that provide a user with an interface for interactingwith the various applications that are provided by the application severmodule 30 on the SAP R3 server 20. The first two devices are GUIXTclient devices 120 and 130 and the third device is SAP GUI client device140 that is running a locally activated version of the GUIXT client.

GUIXT client 120 is communicatively coupled with the SAP R3 server 20and the GUIXT server 110 via the wired or wireless network 50. A firstuser session 1 with the SAP R3 server 20 from GUIXT client 120 may beestablished via the GUIXT server module 110A that is resident on the SAPR3 server 20. The GUIXT server module 110A, in turn, communicates withthe Application server module 30 on the SAP R3 server 20. A second usersession 2 with the SAP R3 server 20 from the GUIXT client 120 mayseparately be established via the GUIXT server device 110B that iscommunicatively coupled with the GUIXT client 120 and the SAP R3 server20 via the wired or wireless network 50. The GUIXT server device 110B,in turn, communicates with the Application server module 30 on the SAPR3 server 20 to allow the GUIXT client 120 to interact with the variousapplications and data provided via the application server 30.

GUIXT client 130 is communicatively coupled with the SAP R3 server 20via the wired or wireless network 50 and one or more (only one is shown)wired or wireless networks 150 in between. For example, the one or morewired or wireless networks 150 in between may include the Internet. Athird user session 3 with the SAP R3 server 20 from the GUIXT client 130may be established via the GUIXT server 110B that is communicativelycoupled with the SAP R3 server 20 via the wired or wireless network 50.The GUIXT server 110B, in turn, communicates with the Application servermodule 30 on the SAP R3 server 20.

GUIXT client 140 is locally activated on a SAP GUI device andcommunicatively coupled with the SAP R3 server 20 via the wired network20. A fourth user session 4 with the SAP R3 server 20 from GUIXT client140 may be established directly with the Application server module 30that is resident on the SAP R3 server 20 using the SAP GUI client thatis also resident on client device 140.

In one embodiment, GUIXT client 130 includes and/or implements atermination node module, for high fidelity and complete communicationwith the SAP R3 server 20. Failure to implement the termination nodemodule may result in low fidelity communications between GUIXT client130 and the SAP R3 server 20 that would impede the proper functioning ofGUIXT client 130, for example, due to the intermittent nature ofwireless communications. The third user session 3 with the SAP R3 server20 from GUIXT client 130 is established via the GUIXT server device 110Bthat is in communication with GUIXT client 130 via the one or more wiredor wireless networks. Advantageously, the connection between GUIXTclient 130 and the GUIXT server device 110B can be persistent orintermittent. GUIXT client 130 may also be actively processingtransactions while disconnected from the GUIXT server device 110B (i.e.,offline) and then later synchronize those transactions with the SAP R3server 20 after coming online via a connection to the SAP R3 server 20through the GUIXT server device 110B.

In an alternative embodiment, the GUIXT client 130 implements atermination node module and connects directly to the application server30 via one or more networks, for example wired or wireless networks 150and 50, which is illustrated as session 5. The termination node moduleadvantageously allows the GUIXT client 130 to communicated directly withthe application server 30 on the SAP R3 server without the need for theintermediate connection via the GUIXT server 110A or 110B.

The function of the GUIXT server (module 110A or device 110B) is tosimulate the SAP R3 server 20 on one end of the connection and simulateSAP GUI on the other end of the connection to facilitate the completionof transactions between any client and the SAP R3 server 20. The GUIXTserver (module 110A or device 110B) resides in the communication path ofthe SAP R3 multi-tier architecture and processes SAP client and servertraffic to accomplish this function.

The GUIXT server (module 110A or device 110B) provides the ability tocontrol communication between the SAP R3 server 20 and a client tosupport client devices that run any variety of operating systems and/orspecial control software (e.g., laser scanners and the like) and to alsosupport client devices that are mobile, wireless, or intermittentlyconnected (e.g., field devices that are offline during data collectionfor certain transactions). In one embodiment, the GUIXT server (module110A or device 110B) may optionally provide scripting capability thatallows a user to implement custom functionality, custom access controls,and to otherwise refine and simplify processes. The GUIXT server (module110A or device 110B) preserves the connection to the SAP R3 server 20when communicating with a mobile client device that may, e.g., beconnected to the SAP environment via a wireless communication network orotherwise have an intermittent network connection. The GUIXT server(module 110A or device 110B) advantageously allows a mobile clientdevice to seamlessly reconnect with the SAP R3 server 20 and continuewith in progress transactions or start new transactions even when thenetwork connectivity between the mobile device and the SAP R3 server 20is intermittent.

Furthermore, the GUIXT server (module 110A or device 110B) providesdownloadable transaction data and forms that can be used by a remotedevice in an offline setting to process transaction data. When theremote device comes online, the GUIXT server (module 110A or device110B) receives the transaction data that was processed offline andconverts that data and sends it to the SAP R3 server 20 as if thetransaction was taking place in real time. In this way the GUIXT server(module 110A or device 110B) provides an offline transaction processingand synchronization functionality in a SAP environment that has neverbefore existed.

FIG. 3 is a block diagram illustrating an example GUIXT server 110according to an embodiment of the present invention. In the illustratedembodiment, the GUIXT server 110 can be a server module that is executedby a processor of a SAP R3 server device, such as the previouslydescribed GUIXT server 110A, or the GUIXT server 110 can be a serverdevice with its own processor, such as the previously described GUIXTserver 110B. Alternative processors 485 or 552 are later described withrespect to FIGS. 9 and 10. The illustrated GUIXT server 110 includes anoffline module 200, a synchronization (sync) module 210, a terminationnode module 220, a user interface condenser module 230, a script module240, a mobile module 250 and a SAP router module 260. These modules areall capable of being executed by the processor 485/552. The GUIXT server110 advantageously provides a centralized mechanism to interface withvarious clients, including GUIXT clients, SAP GUI clients and SAPCONSOLE clients (not shown).

The offline module 200 facilitates the creation and propagation ofoffline transaction forms and user interfaces that can be used bydevices in an offline environment to process transaction data. Theoffline module 200 works in concert with the sync module 210 to updatethe SAP R3 server with the offline transaction data in a way that theSAP R3 server accepts and records the offline transaction as if thetransaction were being processed in real time. A user may employ thescripting module 240 to provide additional access control, businessrules and/or to create offline transaction forms that can be used.

The termination node module 220 monitors traffic between the SAP R3server and a GUIXT client and timely responds to SAP R3 Remote FunctionCall (“RFC”) communications that require a response in order to satisfythe SAP R3 communication protocol. The termination node module 220responses preserve the session between the SAP R3 server and the client(e.g., a GUIXT client) whether or not the client is currently online andcommunicating with the GUIXT server 110, without affecting the fidelityof the underlying data in the transaction. Advantageously, preservationof the session by the termination node module 220 allows the GUIXTserver 130 to access and obtain the full range of available data andtransactions from the SAP R3 server, which would otherwise be limited oraltogether unavailable. In one embodiment, the termination node module220 is configured to detect a disconnect with the client and inresponse, put the connection with the SAP R3 server in a suspended stateuntil the client reconnects.

In one embodiment, the termination node module 220 receivescommunications from the SAP R3 server and translates thosecommunications into another form such as hypertext markup language(“HTML”) or java script object notation (“JSON”). Other formats may alsobe used. Advantageously, the translated HTML or JSON communications aremore easily processed and handled by a GUIXT client.

The mobile module 250 works in concert with the termination node module220 to facilitate communications between a mobile device client and theSAP R3 server. Additionally, the mobile module 250 may work with the UIcondenser module 230 to provide an alternative user interface to a userof the mobile device client that is tailored to maximizing productivityof the various SAP applications through the small screen size of themobile device client. The UI condenser module 230 also providescondensed SAP application screens to a GUIXT client interface that canreduce the number of screens required to complete a single transaction.In one embodiment, significant efficiencies can be realized using the UIcondenser module 230. For example, a transaction requiring twenty five(25) native screens can be condensed to four (4) screens. In oneembodiment, the GUIXT server collects the data from the client usingfour screens and then provides it to the SAP R3 server using the twentyfive screens expected by the SAP R3 server.

The script module 240 works in concert with many of the other modules toallow a user to customize many aspects of the GUIXT server functionalityand to allow the user to streamline data collection screens or implementstreamlined data collection screens developed by a third party. The SAProuter module 260 is configured to operate as a SAP router to allownative SAP GUI clients to communicate with the SAP R3 server via theGUIXT server.

The GUIXT server 110 also has access to a data storage area 115 forpersistent and volatile storage of transaction data, scripts, programs,and other useful data. Data storage area 115 can be implemented as data490, memory 556 or secondary memory 558 as later described with respectto FIGS. 9 and 10. The GUIXT server 110 is also configured to implementload balancing by connecting to the least busy SAP server.

FIG. 4 is a block diagram illustrating an example GUIXT client 120according to an embodiment of the present invention. In the illustratedembodiment, the GUIXT client 120 includes a processor, such asprocessors 485 or 552 that are later described with respect to FIGS. 9and 10. In the illustrated embodiment, the GUIXT client 120 alsocomprises modules that can be executed by the processor 485 or 552including an offline interface module 270, a mobile interface module280, a server communication module 290 and a termination node module225. The GUIXT client 120 may be implemented on a variety of machines.One particular machine is a personal computer device. Another particularmachine is a personal data assistant (“PDA”) device. Other particularmachines include a smart phone device, laser scanner gun device, a barcode reader device, a ten key device, radio frequency (“RF”) scanners,handheld units, pocket PCs, data collection terminals, portable units,and other data entry devices. Advantageously, the GUIXT client 120 isadapted for use on the various particular types of machines on which itmay be implemented and is configured to make efficient use of thevarious aspects of such devices, e.g., the laser, bar code reader, etc.

The offline interface module 270 interacts with a user to presentoffline transaction forms that can be used to input transaction data.The offline interface module 270 also allows the user to manipulateoffline data, for example by performing subsequent offline transactionsrelated to or directly involving previously collected offline data. Theoffline interface module 270 also interacts with the GUIXT server tosend the transaction data to the SAP R3 server.

In one embodiment, the GUIXT client 120 provides client functionalitythat operates without the need for direct interaction with the SAP R3server (backend) application to which it will ultimately provide itstransaction data. For example, the offline interface module 270 maydownload a set of records that collectively comprise a transaction, suchas an invoice. These records can be stored in the data storage area 125.In practice, an offline GUIXT client 120 allows a field agent tointeract with the transaction records via the offline interface module270 to capture necessary transaction data in real time. Up to datetransaction records are downloaded onto the offline GUIXT client 120device and stored in data storage area 125 prior to carrying out thetransaction. Records for any type of transaction can be created. Theoffline user can perform multiple transactions while offline using thetransaction records. The results of these multiple transactions arestored in the data storage area 125. Subsequent transactions can evenuse stored data that was collected during a prior offline transactionand stored in the data storage area 125 on the offline GUIXT client 120.When the user returns to a place where the offline GUIXT client 120device goes online, the offline interface module 270 synchronizes thetransaction data with the SAP R3 server via the GUIXT server.

In one embodiment, the transaction records that are provided to theGUIXT client 120 can be created (e.g., by the GUIXT sever) using ashadow transaction. For example, when a GUIXT client 120 is connected tothe SAP R3 server, the GUIXT server records a transaction. The GUIXTserver begins recording and stores the various data fields required forthe transaction and stops the recording when the transaction is done.Advantageously, the GUIXT server offline module 200 converts the entirerecorded sequence into the set of transaction records needed to fullycarry out that transaction while offline. Advantageously, the set oftransaction records may be condensed before being provided to the GUIXTclient 120 to improve efficiency of data collection during the offlinetransaction.

In an alternative embodiment, transaction records can have expirationtags added to each record or each field in each record such that all orcertain data in the offline transaction records is associated with anexpiration tag. Thus, while the GUIXT client 120 is still offline, thetransaction data collected via the offline interface module 270 can beretrieved from data storage 125 and processed to determine what data, ifany, may be expired or near expiration. For example, collectedtransaction data can be tagged (e.g., using color in a visual interface)according to the margin of error possible based on the validity (expiredor not) of the collected transaction data.

For example, a base unit price for a widget has an expiration date inthe transaction records that were downloaded from the SAP R3 server andstored in data storage area 125 on the GUIXT client 120. The discountlogic for widget sales also has an expiration date. In this example,because the offline GUIXT client 120 device has not recentlysynchronized with the SAP R3 server, the discount logic for widget saleshas expired, although the base unit price has not expired. Finally, atransaction was just entered and the transaction itself is still valid(i.e., not expired).

Given this scenario, the offline interface module 270 is configured toprocess the data for this particular widget sales transaction and, forexample, color the base price green because the number of widgets fromthe transaction multiplied by the base unit price is still valid,unexpired information. However, the discount amount (which iscalculated) is colored red because the discount logic has expired. Otherscenarios for entering transaction data and calculating potentialresults can also be implemented to allow, e.g., a sales person to walkthrough a variety of scenarios with a customer or potential customer. Inthis fashion, e.g., a sales person can still work and apply factors whenpresenting the information in the field while being notified with easilyrecognizable correction factors and prompted to provide appropriatedisclaimers, for example.

Advantageously, when the GUIXT client 120 device is later online andsynchronized with the SAP R3 server, the expired information from theoffline transaction records stored on the GUIXT client 120 device isupdated and provided to the SAP R3 server so that the correct parametersof the transaction are entered into the system.

In one embodiment, the offline interface module 270 is configured toimplement certain smart attributes, for example during data collectionon a mobile GUIXT client 120 device with limited user interfacecapabilities. In one embodiment, smart attributes can include: (1)pattern matching; (2) validation; (3) auto-tab; and (4) auto-submit.Pattern matching allows certain entry fields of a transaction requiringdata input to be associated with a predetermined pattern. When a userenters data conforming to the predetermined pattern, the offlineinterface module 270 populates that field with the conforming data.Advantageously, the field is populated whether the field is currentlythe active data entry field or if the field appears somewhere else inthe form. For example, a transaction form has three fields with thefollowing predetermined pattern matching characteristics:

field_(—)1: ???

field_(—)2: bin*

field_(—)3: am2-?00

During data entry for a transaction, if the user enters:

am2-400,<TAB>,100,<TAB>,bin34789897

then the offline interface module 270 populates field_(—)1 with 100,populates field2 with bin34789897, and populates field_(—)3 witham2-400. In this example, the <TAB> key indicates that the user is doneentering data for a field. Advantageously, transaction forms can have aplurality of fields with predetermined pattern matching characteristicsassigned and other fields without assigned predetermined patternmatching characteristics. The pattern matching capabilities of theoffline interface module 270 only attempt to populate those with havingassigned predetermined pattern matching characteristics with entereddata that matches.

The validation capabilities of the offline interface module 270 allowdata entered into a particular field (whether by pattern matching ornot) to be validated against predetermined characteristics of validinput for the field. For example, a field may be valid only if numericaldata is entered, or only if 10 numerical digits are entered (e.g., aphone number field). Various combinations can be employed as thepredetermined characteristics of valid input for a field.Advantageously, this allows data to be validated at the time of entrysuch that it does not have to be re-entered upon validation (if any) bythe SAP R3 server.

The auto-tab capabilities of the offline interface module 270 allow datato be entered without having to enter the <TAB> character between field.Auto-tab can be employed during field data input into a form, but maymost advantageously be employed during barcode scanner or other types ofautomated input from a GUIXT client device 120. For example, the offlineinterface module 270 may determine whether a user is manually enteringdata or if the data is being provided by a barcode reader or scanner bydetermining the elapsed time between the first character of data inputand the second character of data input. If the elapsed time exceeds acertain predetermined threshold, then the offline interface module 270determines that the data entry is manual. In one embodiment, a thresholdof 40 milliseconds can be used such that if the time between the firstand second characters is less than 40 milliseconds, then the offlineinterface module 270 determines that the data input means is by someautomated device such as a barcode reader, scanner, or other suchdevice. Advantageously, if the entry means is determined to be otherthan manual data entry, the offline interface module 270 implements theauto tab more quickly than if the data is being entered manually by theuser.

In one embodiment, the auto-tab function is implemented after a certainperiod of elapsed time with no data input. For example, during fielddata input, a user may type in a certain amount of data and then pausefor a few seconds. When a predetermined threshold of time has passed,the offline interface module 270 automatically proceeds to the next dataentry field, or automatically determines that the next entered data isfor a separate field (e.g., when pattern matching is also beingemployed). The predetermined threshold of time is advantageously resetwhenever data is entered prior to the passing of the predeterminedthreshold amount of time. In an alternative embodiment, a plurality ofpredetermined time thresholds can be established with different actionsassociated with each. For example, a short pause may cause an auto-tabto the next field while a long pause may indicate that the user is doneentering text, but no auto-tab is employed. Additionally, offlineinterface module 270 may distinguish between different types of inputsuch that if the input is made via a scanning device, then the auto-tabis performed after each scan, regardless of any predetermined thresholdof time value that has been set.

The auto-submit capabilities of the offline interface module 270 allowdata to be automatically submitted (e.g., either offline to data storageor online to the SAP R3 server) when all expected data has been entered.This feature may be employed during manual data entry and may also beadvantageously employed during automated data entry using a GUIXT client120 device such as a barcode reader, scan gun or other such device. Inone embodiment, an auto-submit will be performed only after patternmatching and validation have been performed.

The mobile interface module 280 interacts with the mobile module 250 onthe GUIXT server to maintain the session between the GUIXT client 120and the SAP R3 server on a mobile device that may have a networkconnection that is spotty or intermittent.

The server communication module 290 is configured to facilitatecommunications between the GUIXT client 120 and the GUIXT server 110.The server communication module 290 may work in conjunction with themobile and offline interfaces to facilitate communications with theGUIXT server 110. For example, the server communication module allows auser to configure a connection to a SAP R3 server by providing the nameof the application server module or providing a SAP router string (e.g.,an IP address of a GUIXT server). User validation information such as auser name and password can also be stored in a user profile by theserver communication module 290 to facilitate rapid connections withautomatic login when desired. The user profile may also designate whichsmart attributes are to be used and allow the user to set thepredetermined time thresholds for data entry means detection, auto-taband/or auto-submit. Other access control and user restrictions andpermissions may also be stored into the user profile.

Advantageously, the server communication module 290 is also configuredto allow the GUIXT client 120 device to maintain multiple sessions atthe same time with the GUIXT server/SAP R3 server.

The termination node module 225 monitors traffic between the GUIXTclient 120 device and the SAP R3 server and timely responds to SAP R3Remote Function Call (“RFC”) communications that require a response inorder to satisfy the SAP R3 communication protocol. The responses to SAPR3 requests from the termination node module 225 preserve the sessionbetween the SAP R3 server and the GUIXT client 120 device whether or notthe user of the GUIXT client 120 is currently active and communicatingwith the GUIXT server 110. The responsive communications from thetermination node module 225 to the SAP R3 server advantageously do notadversely affect the fidelity of the underlying data in a current (orperhaps suspended) transaction between the GUIXT client 120 and the SAPR3 server. Advantageously, preservation of the session by thetermination node module 225 allows the GUIXT client 120 device to accessand obtain the full range of available data and transactions from theSAP R3 server, which would otherwise be limited or altogetherunavailable. In one embodiment, the termination node module 225 receivescommunications from the SAP R3 server and translates thosecommunications into another form such as hypertext markup language(“HTML”) or java script object notation (“JSON”). Other formats may alsobe used. Advantageously, the translated HTML or JSON communications aremore easily processed and handled by the GUIXT client 120.

FIG. 5 is a flow diagram illustrating an example method for mobilecommunications in a SAP environment according to an embodiment of thepresent invention. The process can be carried out by a system such aspreviously described with respect to FIGS. 2-4, for example, by theGUIXT server module or the GUIXT server device in combination with aGUIXT client or SAP GUI client. Initially, in step 300 the GUIXT serverreceives a SAP server request destined for a GUIXT client. The GUIXTserver determines that the request requires a response and therefore instep 305 the termination node module sends a responsive communication tothe SAP server on behalf of the GUIXT client. Advantageously, theresponsive communication allows the session between the SAP server andthe GUIXT client to be maintained. In step 310, the GUIXT server alsosends the SAP server request to the GUIXT client for processing. Once aresponse is received from the GUIXT client, as shown in step 315, theGUIXT server provides the client response to the SAP server in step 320.If there are more client responses received, as determined in step 325,those additional responses are also provided to the SAP server uponreceipt. Alternatively, if there is more data to be sent to the SAPserver as part of a single response, the GUIXT server sends that data tothe SAP server. Once the complete response from the client has been sentto the SAP server, the process ends. The process may begin again when anew SAP server request is sent to the GUIXT client.

FIG. 6 is a flow diagram illustrating an example method for offline datacollection and synchronization in a SAP environment according to anembodiment of the present invention. The process can be carried out by asystem such as previously described with respect to FIGS. 2-4, forexample, by the GUIXT server module or the GUIXT server device incombination with a GUIXT client or SAP GUI client. Initially, in step350 transaction forms are downloaded onto the GUIXT client device. Theoffline transaction forms may be initially stored by the GUIXT serverduring an online transaction process with the SAP server such that therequired data entry fields and related transaction information (e.g.,expiration information) is current. The stored transaction forms (e.g.,screens) may then be processed at the GUIXT server to increaseefficiency, for example by condensing screens/forms and otherwiseimproving the flow for necessary data that is part of the transaction.The transaction forms are then provided to the GUIXT client and storedin memory on the GUIXT client for use in the field to collecttransaction data while offline, as shown in step 355.

During an offline transaction, in step 360 the transaction data isrecorded and stored locally in the offline GUIXT client device in step365. During the offline transaction, pattern matching, validation,auto-tab and auto-submit smart attributes can be employed.Advantageously, the stored transaction data can be processed offline fora variety of uses including subsequent transactions or to seecalculations and the effect of expired data. At some later time, theGUIXT client device is brought online and a connection is establishedwith a GUIXT server and a session is created with a SAP server as shownin step 370. The transaction data is uploaded to the SAP server in step375 through the GUIXT server, which can reformat and convert thetransaction data from the GUIXT client device as needed for delivery tothe SAP server in a format recognized by the SAP server. For example,the condensed offline transaction data may be populated back into theplurality of screens that are expected by the SAP server for thatparticular transaction. If any portion of the data to be provided to theSAP server is expired, as determined by examination of expiration tagsassociated with the data in step 380, the GUIXT server can update theexpired data in step 385 before sending it to the SAP server in step375. Data from multiple transactions can be provided to the SAP serverusing this process.

FIG. 7 is a flow diagram illustrating an example method for maintaininga persistent connection with a SAP server in a SAP environment accordingto an embodiment of the present invention. The process can be carriedout by a system such as previously described with respect to FIGS. 2-4,for example, by the GUIXT server module or the GUIXT server device incombination with a GUIXT client or SAP GUI client. Alternatively, theprocess could be carried out by only a GUIXT client. Initially, in step400 the GUIXT server receives a SAP server request destined for a GUIXTclient. The GUIXT server analyzes the SAP request in step 405 todetermine if the request is a particular type of request called a remotefunction call. If the SAP server request is not an RFC request then theGUIXT server forwards the request to GUIXT client and makes no responseto the SAP server, as shown in step 420.

However, if the request is an RFC request, as determined in step 405,then the GUIXT server determines if the RFC request is the type of RFCrequest that requires a response to maintain the session between theGUIXT client and the SAP server, as shown in step 410. If the requestdoes not require a response to maintain the session or for any otherreason, then the GUIXT server makes no response to the SAP server, asshown in step 420. If the RFC request does require a response, however,then in step 415 the GUIXT server (e.g., using the previously describedtermination node module) generates a simulated response with sufficientinformation to maintain the session between the GUIXT client and the SAPserver and sends the simulated response to the SAP server on behalf ofthe GUIXT client for which the RFC request was originally destined.Advantageously, by simulating the required RFC response, the GUIXTserver is able to maintain the session between the SAP server and theGUIXT client.

FIG. 8 is a flow diagram illustrating an example method for improved SAPcommunications according to an embodiment of the present invention. Theprocess can be carried out by a system such as previously described withrespect to FIGS. 2-4, for example, by the GUIXT server module or theGUIXT server device in combination with a GUIXT client or SAP GUIclient. Alternatively, the process could be carried out by only a GUIXTclient. Initially, in step 425 the GUIXT server or client receives aplural SAP server request. A plural SAP server request is a request thatcan be parsed out into more than one separate action. One example of aplural SAP server request is an OLE_FLUSH_CALL request. Next, in step430 the plural SAP server request is parsed into a plurality of discreteactions to be handled by the GUIXT client. Next, in step 435, each ofthe discrete actions is assigned a relative priority by the GUIXT serveror client and in step 440 the high priority actions are carried out andresponses are sent to the SAP server. For example, the high priorityitems can be forwarded to or processed by the GUIXT client in order togenerate responses to these particular items.

Additionally, in step 440 the low priority actions that do not require aresponse are ignored and the GUIXT server or client sends no response tothe SAP server. For each of the other actions that need to be respondedto in order to maintain effective communications with the SAP server(e.g., to maintain the session) but are not necessarily required in thecontext of the current workflow, in step 445 the GUIXT server (e.g., thepreviously described termination node module) generates a simulatedresponse to the SAP server and sends the simulated responses to the SAPserver. Accordingly, the GUIXT server or client selectively responds tothe actions that require a response and ignores those actions that donot require a response to maintain the session with the SAP serverwithout loss of data fidelity.

For example, a particular action may require an associated handle to anobject. In one embodiment, a handle is a numerical identifier.Accordingly, the handle is fabricated by the GUIXT server (e.g., by thepreviously described termination node module) and then sent back to theSAP server to simulate a response to that particular action, effectivelycompleting the communication loop with the SAP server. In oneembodiment, the handle may be fabricated by generating a random numberfor use as the handle or by using a timestamp or some other technique,as will be understood by those skilled in the art. Advantageously, thesystem improves SAP communications by sending the simulated responses tothe SAP server that indicate that an action has been carried out priorto the action actually being carried out. The GUIXT server then managesthe actual carrying out of the action in a manner that is most efficientfor the GUIXT server and GUIXT client while the SAP server can also movealong with its own most efficient SAP communications processing.

Additionally, the system improves SAP communications by dividing a SAPserver request into a plurality of separate actions and thenprioritizing each of the individual actions. In this fashion, the GUIXTserver can attend to the highest priority actions and provide timelyresponses to the SAP server and the GUIXT sever can ignore the lowestpriority actions to which the SAP server does not require a response. Asignificant advantage in improved SAP communications is also realized byhaving the GUIXT server (e.g., the previously described termination nodemodule) simulate responses to the SAP server for those actions thatrequire a response to the SAP server but are not required in the contextof the current workflow to be immediately attended to. Thus, the GUIXTserver (e.g., the previously described termination node module) respondsto the SAP server prior to the completion of the task and in many casesprior to the task even beginning to be carried out by the GUIXT clientor GUIXT server, whichever has been assigned the particular task.

FIG. 9 is a block diagram illustrating an example wireless communicationdevice 450 that may be used in connection with various embodimentsdescribed herein. For example, the wireless communication device 450 maybe used in conjunction with a GUIXT client or server as previouslydescribed with respect to FIGS. 2-4. Other wireless communicationdevices and/or architectures may also be used, as will be clear to thoseskilled in the art.

In the illustrated embodiment, wireless communication device 450comprises an antenna system 455, a radio system 460, a baseband system465, a speaker 470, a microphone 480, a central processing unit (“CPU”)485, a data storage area 490, and a hardware interface 495. In thewireless communication device 450, radio frequency (“RF”) signals aretransmitted and received over the air by the antenna system 455 underthe management of the radio system 460 to provide a networkcommunication interface that provides connectivity to a wirelesscommunication network that can transmit voice or data communications.

In one embodiment, the antenna system 455 may comprise one or moreantennae and one or more multiplexors (not shown) that perform aswitching function to provide the antenna system 455 with transmit andreceive signal paths. In the receive path, received RF signals can becoupled from a multiplexor to a low noise amplifier (not shown) thatamplifies the received RF signal and sends the amplified signal to theradio system 460.

In alternative embodiments, the radio system 460 may comprise one ormore radios that are configured to communication over variousfrequencies. In one embodiment, the radio system 460 may combine ademodulator (not shown) and modulator (not shown) in one integratedcircuit (“IC”). The demodulator and modulator can also be separatecomponents. In the incoming path, the demodulator strips away the RFcarrier signal leaving a baseband receive audio signal, which is sentfrom the radio system 460 to the baseband system 465.

If the received signal contains audio information, then baseband system465 decodes the signal and converts it to an analog signal. Then thesignal is amplified and sent to the speaker 470. The baseband system 465also receives analog audio signals from the microphone 480. These analogaudio signals are converted to digital signals and encoded by thebaseband system 465. The baseband system 465 also codes the digitalsignals for transmission and generates a baseband transmit audio signalthat is routed to the modulator portion of the radio system 460. Themodulator mixes the baseband transmit audio signal with an RF carriersignal generating an RF transmit signal that is routed to the antennasystem and may pass through a power amplifier (not shown). The poweramplifier amplifies the RF transmit signal and routes it to the antennasystem 455 where the signal is switched to the antenna port fortransmission.

The baseband system 465 is also communicatively coupled with the centralprocessing unit 485. The central processing unit 485 has access to adata storage area 490. The central processing unit 485 is preferablyconfigured to execute instructions (i.e., computer programs or software)that can be stored in the data storage area 490. Computer programs canalso be received from the baseband processor 465 and stored in the datastorage area 490 or executed upon receipt. Such computer programs, whenexecuted, enable the wireless communication device 450 to perform thevarious functions of the present invention as previously described. Forexample, data storage area 490 may include various software modules (notshown) that were previously described with respect to FIGS. 3-4 and areexecutable by processor 485.

In this description, the term “computer readable medium” is used torefer to any media used to provide executable instructions (e.g.,software and computer programs) to the wireless communication device 450for execution by the central processing unit 485. Examples of thesemedia include the data storage area 490, microphone 480 (via thebaseband system 465), antenna system 455 (also via the baseband system465), and hardware interface 495. These computer readable mediums aremeans for providing executable code, programming instructions, andsoftware to the wireless communication device 450. The executable code,programming instructions, and software, when executed by the centralprocessing unit 485, preferably cause the central processing unit 485 toperform the inventive features and functions previously describedherein.

The central processing unit 485 is also preferably configured to receivenotifications from the hardware interface 495 when new devices aredetected by the hardware interface. Hardware interface 495 can be acombination electromechanical detector with controlling software thatcommunicates with the CPU 485 and interacts with new devices. Thehardware interface 495 may be a firewire port, a USB port, a Bluetooth,infrared, laser, or RF wireless unit, or any of a variety of wired orwireless access mechanisms. Examples of hardware that may be linked withthe device 450 include barcode readers, laser scanners, data storagedevices, computing devices, headphones, microphones, and the like.

Hardware interface 495 may also be linked with device specific inputmechanisms such as a laser gun, barcode reader, or RF reader. In oneembodiment, the hardware interface 495 connects a barcode reader for usein a warehouse. In an alternative embodiment, the hardware interface 495connects a scanning device for use in reading barcodes, meters, or otherdata producing indicia.

FIG. 10 is a block diagram illustrating an example computer system 550that may be used in connection with various embodiments describedherein. For example, the computer system 550 may be used in conjunctionwith GUIXT server, a SAP R3 server (that implements the GUIXT server),or a GUIXT client as previously described with respect to FIGS. 2-4.Other computer systems and/or architectures may also be used, as will beclear to those skilled in the art.

The computer system 550 preferably includes one or more processors, suchas processor 552. Additional processors may be provided, such as anauxiliary processor to manage input/output, an auxiliary processor toperform floating point mathematical operations, a special-purposemicroprocessor having an architecture suitable for fast execution ofsignal processing algorithms (e.g., digital signal processor), a slaveprocessor subordinate to the main processing system (e.g., back-endprocessor), an additional microprocessor or controller for dual ormultiple processor systems, or a coprocessor. Such auxiliary processorsmay be discrete processors or may be integrated with the processor 552.

The processor 552 is preferably connected to a communication bus 554.The communication bus 554 may include a data channel for facilitatinginformation transfer between storage and other peripheral components ofthe computer system 550. The communication bus 554 further may provide aset of signals used for communication with the processor 552, includinga data bus, address bus, and control bus (not shown). The communicationbus 554 may comprise any standard or non-standard bus architecture suchas, for example, bus architectures compliant with industry standardarchitecture (“ISA”), extended industry standard architecture (“EISA”),Micro Channel Architecture (“MCA”), peripheral component interconnect(“PCI”) local bus, PCI Express (“PCI-E”), Accelerated Graphics Port(“AGP”) or standards promulgated by the Institute of Electrical andElectronics Engineers (“IEEE”) including IEEE 488 general-purposeinterface bus (“GPIB”), IEEE 696/S-100, and the like.

Computer system 550 preferably includes a main memory 556 and may alsoinclude a secondary memory 558. The main memory 556 provides storage ofinstructions and data for programs executing on the processor 552. Themain memory 556 is typically semiconductor-based memory such as dynamicrandom access memory (“DRAM”) and/or static random access memory(“SRAM”). Other semiconductor-based memory types include, for example,synchronous dynamic random access memory (“SDRAM”), double data ratesynchronous dynamic random access memory (“DDR”, “DDR-2”, “DDR-3”),Rambus dynamic random access memory (“RDRAM”), ferroelectric randomaccess memory (“FRAM”), and the like, including read only memory(“ROM”).

The secondary memory 558 may optionally include a hard disk drive 560and/or a removable storage drive 562, for example a floppy disk drive, amagnetic tape drive, a compact disc (“CD”) drive, a digital versatiledisc (“DVD”) drive, etc. The removable storage drive 562 reads fromand/or writes to a removable storage medium 564 in a well-known manner.Removable storage medium 564 may be, for example, a floppy disk,magnetic tape, CD, DVD, etc.

The removable storage medium 564 is preferably a computer readablemedium having stored thereon computer executable code (i.e., software)and/or data. The computer software or data stored on the removablestorage medium 564 is read into the computer system 550 as electricalcommunication signals 578.

In alternative embodiments, secondary memory 558 may include othersimilar means for allowing computer programs or other data orinstructions to be loaded into the computer system 550. Such means mayinclude, for example, an external storage medium 572 and an interface570. Examples of external storage medium 572 may include an externalhard disk drive or an external optical drive, or and externalmagneto-optical drive.

Other examples of secondary memory 558 may include semiconductor-basedmemory such as programmable read-only memory (“PROM”), erasableprogrammable read-only memory (“EPROM”), electrically erasable read-onlymemory (“EEPROM”), or flash memory (block oriented memory similar toEEPROM). Also included are any other removable storage units 572 andinterfaces 570, which allow software and data to be transferred from theremovable storage unit 572 to the computer system 550. In oneembodiment, main memory 556 and secondary memory 558 may include varioussoftware modules (not shown) that were previously described with respectto FIGS. 3-4 and are executable by processor 552.

Computer system 550 may also include a communication interface 574. Thecommunication interface 574 allows software and data to be transferredbetween computer system 550 and external devices (e.g. printers),networks, or information sources. For example, computer software orexecutable code may be transferred to computer system 550 from a networkserver via communication interface 574. Examples of communicationinterface 574 include a modem, a network interface card (“NIC”), acommunications port, a PCMCIA slot and card, an infrared interface, anRF interface, and an IEEE 1394 fire-wire, just to name a few. Examplesof hardware that may be linked with the device 550 via the communicationinterface 574 include barcode readers, laser scanners, data storagedevices, computing devices, headphones, microphones, and the like.

Communication interface 574 may also be linked with device specificinput mechanisms such as a laser gun, barcode reader, RF reader, orkeyboard and/or pointer device designed to collect user input. In oneembodiment, the communication interface 574 connects a barcode readerfor use in a warehouse. In an alternative embodiment, the communicationinterface 574 connects a scanning device for use in reading barcodes,meters, or other data producing indicia. In yet another alternativeembodiment, the communication interface 574 connects a data collectionterminal in a warehouse.

Communication interface 574 preferably implements industry promulgatedprotocol standards, such as Ethernet IEEE 802 standards, Fiber Channel,digital subscriber line (“DSL”), asynchronous digital subscriber line(“ADSL”), frame relay, asynchronous transfer mode (“ATM”), integrateddigital services network (“ISDN”), personal communications services(“PCS”), transmission control protocol/Internet protocol (“TCP/IP”),serial line Internet protocol/point to point protocol (“SLIP/PPP”),Point-to-Point Protocol over Ethernet (“PPPoE”) and so on, but may alsoimplement customized or non-standard interface protocols as well.

Software and data transferred via communication interface 574 aregenerally in the form of electrical communication signals 578. Thesesignals 578 are preferably provided to communication interface 574 via acommunication channel 576. Communication channel 576 carries signals 578and can be implemented using a variety of wired or wirelesscommunication means including wire or cable, fiber optics, conventionalphone line, cellular phone link, wireless data communication link, radiofrequency (RF) link, or infrared link, just to name a few.

Computer executable code (i.e., computer programs or software) is storedin the main memory 556 and/or the secondary memory 558. Computerprograms can also be received via communication interface 574 and storedin the main memory 556 and/or the secondary memory 558. Such computerprograms or modules, when executed, enable the computer system 550 toperform the various functions of the present invention as previouslydescribed.

In this description, the term “computer readable medium” is used torefer to any media used to provide computer executable code (e.g.,software and computer programs) to the computer system 550. Examples ofthese media include main memory 556, secondary memory 558 (includinghard disk drive 560, removable storage medium 564, and external storagemedium 572), and any peripheral device communicatively coupled withcommunication interface 574 (including a network information server orother network device). These computer readable mediums are means forproviding executable code, programming instructions, and software to thecomputer system 550.

In an embodiment that is implemented using software, the software may bestored on a computer readable medium and loaded into computer system 550by way of removable storage drive 562, interface 570, or communicationinterface 574. In such an embodiment, the software is loaded into thecomputer system 550 in the form of electrical communication signals 578.The software, when executed by the processor 552, preferably causes theprocessor 552 to perform the features and functions previously describedherein.

Various embodiments may also be implemented primarily in hardware using,for example, components such as application specific integrated circuits(“ASICs”), or field programmable gate arrays (“FPGAs”). Implementationof a hardware state machine capable of performing the functionsdescribed herein will also be apparent to those skilled in the relevantart. Various embodiments may also be implemented using a combination ofboth hardware and software.

Furthermore, those of skill in the art will appreciate that the variousillustrative logical blocks, modules, circuits, and method stepsdescribed in connection with the above described figures and theembodiments disclosed herein can often be implemented as electronichardware, computer software, or combinations of both. To clearlyillustrate this interchangeability of hardware and software, variousillustrative components, blocks, modules, circuits, and steps have beendescribed above generally in terms of their functionality. Whether suchfunctionality is implemented as hardware or software depends upon theparticular application and design constraints imposed on the overallsystem. Skilled persons can implement the described functionality invarying ways for each particular application, but such implementationdecisions should not be interpreted as causing a departure from thescope of the invention. In addition, the grouping of functions within amodule, block, circuit or step is for ease of description. Specificfunctions or steps can be moved from one module, block or circuit toanother without departing from the invention.

Moreover, the various illustrative logical blocks, modules, and methodsdescribed in connection with the embodiments disclosed herein can beimplemented or performed with a general purpose processor, a digitalsignal processor (“DSP”), an ASIC, FPGA or other programmable logicdevice, discrete gate or transistor logic, discrete hardware components,or any combination thereof designed to perform the functions describedherein. A general-purpose processor can be a microprocessor, but in thealternative, the processor can be any processor, controller,microcontroller, or state machine. A processor can also be implementedas a combination of computing devices, for example, a combination of aDSP and a microprocessor, a plurality of microprocessors, one or moremicroprocessors in conjunction with a DSP core, or any other suchconfiguration.

Additionally, the steps of a method or algorithm described in connectionwith the embodiments disclosed herein can be embodied directly inhardware, in a software module executed by a processor, or in acombination of the two. A software module can reside in RAM memory,flash memory, ROM memory, EPROM memory, EEPROM memory, registers, harddisk, a removable disk, a CD-ROM, or any other form of storage mediumincluding a network storage medium. An exemplary storage medium can becoupled to the processor such the processor can read information from,and write information to, the storage medium. In the alternative, thestorage medium can be integral to the processor. The processor and thestorage medium can also reside in an ASIC.

The above description of the disclosed embodiments is provided to enableany person skilled in the art to make or use the invention. Variousmodifications to these embodiments will be readily apparent to thoseskilled in the art, and the generic principles described herein can beapplied to other embodiments without departing from the spirit or scopeof the invention. Thus, it is to be understood that the description anddrawings presented herein represent a presently preferred embodiment ofthe invention and are therefore representative of the subject matterwhich is broadly contemplated by the present invention. It is furtherunderstood that the scope of the present invention fully encompassesother embodiments that may become obvious to those skilled in the artand that the scope of the present invention is accordingly not limited.

1. A system for improved communication with an enterprise resourceplanning (ERP) application, the system comprising: at least onecomputer-readable storage device; at least one processor communicativelycoupled with the at least one computer-readable storage device; and atleast one executable program module stored on the at least onecomputer-readable storage device, wherein the at least one executableprogram module, when executed by the at least one processor, during asession between an ERP application and a client application residing ona mobile device, receives a request comprising a plurality of actionssent from the ERP application to the client application, detects that noconnection exists with the client application, determines a subset ofone or more of the plurality of actions which require a response tomaintain the session; while no connection exists with the clientapplication, generates a simulated response for each of the subset ofone or more actions, and sends the simulated response for each of thesubset of one or more actions to the ERP application to maintain thesession between the ERP application and the client application, andignores one or more of the plurality of actions which are not includedin the subset of one or more actions.
 2. The system of claim 1, whereinthe at least one executable program module further: assigns a priorityto each of the plurality of actions; and generates a simulated responsefor one or more of the plurality of actions based on the assignedpriority.
 3. The system of claim 1, wherein the at least one executableprogram module sends the at least one simulated response to the ERPapplication prior to the request being completed.
 4. The system of claim1, wherein the request comprises a remote function call request.
 5. Thesystem of claim 1, wherein generating at least one simulated response tothe request comprises fabricating a handle to an object.
 6. The systemof claim 1, wherein the ERP server is an SAP server.
 7. A method forimproved communication with an enterprise resource planning (ERP)application, the method comprising, by at least one processor whichexecutes at least one executable program module: during a sessionbetween an ERP application and a client application residing on a mobiledevice, receiving a request comprising a plurality of actions sent fromthe ERP application to the client application; detecting that noconnections exists with the client application; determining a subset ofone or more of the plurality of actions which require a response tomaintain the session; while no connection exists with the clientapplication, generating a simulated response for each of the subset ofone or more actions; and sending the simulated response for each of thesubset of one or more actions to the ERP application to maintain thesession between the ERP application and the client application, andignoring one or more of the plurality of actions which are not includedin the subset of one or more actions.
 8. The method of claim 7, furthercomprising: by the client application on the mobile device, when aconnection is re-established with the at least one executable programmodule, continuing with an in progress transaction.
 9. The method ofclaim 7, further comprising: while no connection exists with the clientapplication, recording one or more actions associated with the request;converting the one or more actions into a set of records needed tocomplete a transaction; and when a connection is reestablished with theclient application, sending the set of records to the clientapplication.
 10. The method of claim 9, wherein the set of records arecondensed prior to sending the set of records to the client application.11. The method of claim 7, wherein the at least one simulated responseis sent to the ERP application prior to the request being completed. 12.A computer-implemented method for improved communication with a SAPserver via a wireless data communication network, where one or moreprocessors are programmed to perform steps comprising: receiving acommunication from a SAP server via a wireless data communicationnetwork; parsing said communication into a plurality of actions;identifying a portion of said plurality of actions requiring a responseto maintain a current session with the SAP server; generating asimulated response for each action in said identified portion of saidplurality of actions; providing the simulated response for each actionin said portion of said plurality of actions to the SAP server tomaintain the current session with the SAP server; determining that afirst action is a remote function call action and sending a simulatedresponse to the remote function call action to the SAP server; anddetermining that a second action is not a remote function call actionand not sending the SAP server a response to the second action.